It was found that the Linux kernel's Datagram Congestion Control Protocol (DCCP) implementation used the IPv4-only inet_sk_rebuild_header() function for both IPv4 and IPv6 DCCP connections, which could result in memory corruptions. A remote attacker could use this flaw to crash the system.
Find out more about CVE-2017-2634 from the MITRE CVE dictionary dictionary and NIST NVD.
This issue affects Red Hat Enterprise Linux 5 kernel. This issue was fixed in a versions 6 and 7 prior to this issue being raised.
Future Linux kernel updates for Red Hat Enterprise Linux 5 may address this issue.
| CVSS3 Base Score | 7.5 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity Impact | None |
| Availability Impact | High |
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Enterprise Linux 5 (kernel) | RHSA-2017:0323 | 2017-02-24 |
| Red Hat Enterprise Linux Long Life (v. 5.6 server) (kernel) | RHSA-2017:0347 | 2017-02-28 |
| Red Hat Enterprise Linux Long Life (v. 5.9 server) (kernel) | RHSA-2017:0346 | 2017-02-28 |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 7 | kernel | Not affected |
| Red Hat Enterprise Linux 6 | kernel | Not affected |
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